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Wildfire near Boulder 40 percent contained

BOULDER — Cooler weather has helped crews contain 40 percent of an 100-acre wildfire in a canyon northwest of Boulder

Residents of 340 homeowners were still on standby to evacuate today but crews so far have managed to keep the fire away from homes. But fire officials say that warmer and windier weather expected Tuesday could hamper their efforts.

Authorities say the Maxwell fire started Sunday near a shooting range but the cause of the fire hasn’t been determined.

In southern Colorado, crews are still fighting a wildfire burning on 7 square miles. The Duckett fire grew a bit over the weekend in hot, windy conditions but isn’t threatening any homes.

Most the growth has been in a steep, rugged terrain in the Sangre de Cristo Mountains.